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ACQUISITIONS AND DISPOSALS - Additional Information (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
May 23, 2025
CNY (¥)
May 23, 2025
USD ($)
Jun. 28, 2024
Dec. 27, 2023
CNY (¥)
Dec. 27, 2023
USD ($)
Dec. 27, 2023
HKD ($)
Mar. 01, 2023
CNY (¥)
Mar. 01, 2023
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
USD ($)
Jun. 30, 2025
CNY (¥)
Jun. 30, 2025
USD ($)
Jun. 24, 2025
CNY (¥)
Jun. 24, 2025
USD ($)
Apr. 30, 2025
CNY (¥)
Apr. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 04, 2024
Apr. 26, 2024
CNY (¥)
Apr. 26, 2024
USD ($)
Apr. 25, 2024
CNY (¥)
Apr. 25, 2024
USD ($)
Dec. 28, 2023
ACQUISITIONS AND DISPOSALS                                                      
Goodwill                 ¥ 572,216   ¥ 572,216   ¥ 575,427 $ 81,826             $ 81,826            
Goodwill impairment charges                 0 $ 0 0 $ 0 ¥ 0                            
Beijing Proton Medical Center Co., Ltd. ("BPMC")                                                      
ACQUISITIONS AND DISPOSALS                                                      
Equity interest in equity method investment                                                     54.01%
New Spring Group and its subsidiary | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Percentage of shares sold                                           20.00%          
Datong Meizhongjiahe | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Group recognized a total disposal gain             ¥ 71 $ 10                                      
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]             Gain (Loss) on Disposition of Stock in Subsidiary Gain (Loss) on Disposition of Stock in Subsidiary                                      
King Cheers | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Group recognized a total disposal gain       ¥ (709) $ (100)                                            
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]       Gain (Loss) on Disposition of Stock in Subsidiary Gain (Loss) on Disposition of Stock in Subsidiary Gain (Loss) on Disposition of Stock in Subsidiary                                          
Guangzhou Proton Medical Technology Services Co., Ltd                                                      
ACQUISITIONS AND DISPOSALS                                                      
Disposal group, cash consideration                                     ¥ 24,688                
Guangzhou Proton Medical Technology Services Co., Ltd | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Disposal group, cash consideration | $                                       $ 3,530              
Shanghai Xinhe Enterprise Management Center (Limited Partnership) ("Shanghai Xinhe") | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Disposal group, cash consideration                             ¥ 60,000 $ 8,580 ¥ 60,000 $ 8,580                  
Group recognized a total disposal gain                 ¥ 37,552 $ 5,370                                  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]                 Gain (Loss) on Disposition of Stock in Subsidiary Gain (Loss) on Disposition of Stock in Subsidiary                                  
Guangzhou Yicheng Biological Immune Technology Co. LTD("Guangzhou Yicheng") | Other than sale not discontinued operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Group recognized a total disposal gain ¥ 81 $ 12                                                  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) on Disposition of Stock in Subsidiary Gain (Loss) on Disposition of Stock in Subsidiary                                                  
Beijing Proton Medical Center                                                      
ACQUISITIONS AND DISPOSALS                                                      
Percentage of share consideration       25.00% 25.00% 25.00%                                          
Business combination, consideration transferred | $           $ 1                                          
Guangzhou Swallowing Home Health Management Co., Ltd. | New Spring Group and its subsidiary | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Disposal group, cash consideration                                                 ¥ 1,945 $ 267  
Group recognized a total disposal gain                     ¥ 2,486 $ 341                              
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]                     Gain (Loss) on Disposition of Stock in Subsidiary Gain (Loss) on Disposition of Stock in Subsidiary                              
Percentage of shares sold                                                 50.00% 50.00%  
Percentage of interest held after disposal     20.00%                                                
Consideration amounts outstanding                     ¥ 1,945                   $ 267            
Guangzhou Yipusheng Health Management Co., Ltd. | DTMZ | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Disposal group, cash consideration                                             ¥ 10,000 $ 1,370      
Group recognized a total disposal gain                     ¥ 0                                
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]                     Gain (Loss) on Disposition of Stock in Subsidiary Gain (Loss) on Disposition of Stock in Subsidiary                              
Guangzhou Yipusheng Health Management Co., Ltd. | New Spring Group and its subsidiary | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Group recognized a total disposal gain                     ¥ 120 $ 16                              
Medstar Guangzhou Medical Technology Services Ltd [Member] | Not Discontinued Operations                                                      
ACQUISITIONS AND DISPOSALS                                                      
Group recognized a total disposal gain                 ¥ 0